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Sign language available (prerecorded)

Supplemental requirement

Sign language interpretation is provided for all prerecorded audio content in the primary sign language that is most appropriate for each intended audience or region.

Except when

  • The audio content is an alternative for visual content and clearly labelled as such.
  • The audio content is decorative background sound.
  • The audio is an interface sound effect.

Tests

Sign language for audio only

Procedure

For each instance of prerecorded audio content:

  1. Check that sign language interpretation is available either as picture-in-picture or in a video closely associated with the audio controls.
  2. Check that sign language interpretation uses a version of sign language appropriate for the intended audience or region.

Expected results

ACT Rules

Key Terms

accessibility support set

group of user agents and assistive technologies you test with

The AGWG is considering defining a default set of user agents and assistive technologies that they use when validating guidelines.

Accessibility support sets may vary based on language, region, or situation.

If you are not using the default accessibility set, the conformance report should indicate what set is being used.

accessibility supported

available and working in the user agents and assistive technology in the accessibility support set

The working group intended to include a default accessibility support set. See Default accessibility support set #277.

audio

live or recorded sound signal

audio description

narration added to the soundtrack to describe important visual details that cannot be understood from the main soundtrack alone

For audiovisual media, audio description provides information about actions, characters, scene changes, on-screen text, and other visual content.

Audio description is also sometimes called “video description”, “described video”, “visual description”, or “descriptive narration”.

In standard audio description, narration is added during existing pauses in dialogue. See also extended audio description.

If all important visual information is already provided in the main audio track, no additional audio description track is necessary.

extended audio description

audio description that is added to audiovisual media by pausing the video to allow for additional time to fit in the audio description

This technique is only used when the sense of the video would be lost without the additional audio description and the pauses between dialogue or narration are too short.

interactive element

element that responds to user input and has a distinct programmatically determinable name

In contrast to non-interactive elements. For example, headings or paragraphs.

interface sound effect

a sound that accompanies activation of an interactive element or a notification of a change

non-interactive element

element that does not respond to user input and does not include sub-parts

If a paragraph included a link, the text either side of the link would be considered a static element, but not the paragraph as a whole.

Letters within text do not constitute a “smaller part”.

programmatically determinable

meaning of the content and all its important attributes can be determined by software functionality that is accessibility supported

sign language interpretation

translation of one language, generally a spoken language, into a sign language